-/*
- LUFA Library
- Copyright (C) Dean Camera, 2010.
-
- dean [at] fourwalledcubicle [dot] com
- www.fourwalledcubicle.com
-*/
-
-/*
- Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
-
- Permission to use, copy, modify, distribute, and sell this
- software and its documentation for any purpose is hereby granted
- without fee, provided that the above copyright notice appear in
- all copies and that both that the copyright notice and this
- permission notice and warranty disclaimer appear in supporting
- documentation, and that the name of the author not be used in
- advertising or publicity pertaining to distribution of the
- software without specific, written prior permission.
-
- The author disclaim all warranties with regard to this
- software, including all implied warranties of merchantability
- and fitness. In no event shall the author be liable for any
- special, indirect or consequential damages or any damages
- whatsoever resulting from loss of use, data or profits, whether
- in an action of contract, negligence or other tortious action,
- arising out of or in connection with the use or performance of
- this software.
-*/
-
-/** \file
- *
- * Header file for AudioOutput.c.
- */
-
-#ifndef _AUDIO_OUTPUT_H_
-#define _AUDIO_OUTPUT_H_
-
- /* Includes: */
- #include <avr/io.h>
- #include <avr/wdt.h>
- #include <avr/power.h>
- #include <avr/pgmspace.h>
- #include <avr/interrupt.h>
- #include <stdbool.h>
-
- #include "Descriptors.h"
-
- #include <LUFA/Version.h>
- #include <LUFA/Drivers/Board/LEDs.h>
- #include <LUFA/Drivers/Peripheral/ADC.h>
- #include <LUFA/Drivers/USB/USB.h>
- #include <LUFA/Drivers/USB/Class/MIDI.h>
-
- /* Macros: */
- /** LED mask for the library LED driver, to indicate that the USB interface is not ready. */
- #define LEDMASK_USB_NOTREADY LEDS_LED1
-
- /** LED mask for the library LED driver, to indicate that the USB interface is enumerating. */
- #define LEDMASK_USB_ENUMERATING (LEDS_LED2 | LEDS_LED3)
-
- /** LED mask for the library LED driver, to indicate that the USB interface is ready. */
- #define LEDMASK_USB_READY (LEDS_LED2 | LEDS_LED4)
-
- /** LED mask for the library LED driver, to indicate that an error has occurred in the USB interface. */
- #define LEDMASK_USB_ERROR (LEDS_LED1 | LEDS_LED3)
-
- #define AUDIO_SAMPLE_FREQUENCY 24000
-
- /* Function Prototypes: */
- void SetupHardware(void);
-
- void EVENT_USB_Device_Connect(void);
- void EVENT_USB_Device_Disconnect(void);
- void EVENT_USB_Device_ConfigurationChanged(void);
- void EVENT_USB_Device_UnhandledControlRequest(void);
-
-#endif
+/*\r
+ LUFA Library\r
+ Copyright (C) Dean Camera, 2010.\r
+ \r
+ dean [at] fourwalledcubicle [dot] com\r
+ www.fourwalledcubicle.com\r
+*/\r
+\r
+/*\r
+ Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
+\r
+ Permission to use, copy, modify, distribute, and sell this \r
+ software and its documentation for any purpose is hereby granted\r
+ without fee, provided that the above copyright notice appear in \r
+ all copies and that both that the copyright notice and this\r
+ permission notice and warranty disclaimer appear in supporting \r
+ documentation, and that the name of the author not be used in \r
+ advertising or publicity pertaining to distribution of the \r
+ software without specific, written prior permission.\r
+\r
+ The author disclaim all warranties with regard to this\r
+ software, including all implied warranties of merchantability\r
+ and fitness. In no event shall the author be liable for any\r
+ special, indirect or consequential damages or any damages\r
+ whatsoever resulting from loss of use, data or profits, whether\r
+ in an action of contract, negligence or other tortious action,\r
+ arising out of or in connection with the use or performance of\r
+ this software.\r
+*/\r
+\r
+/** \file\r
+ *\r
+ * Header file for AudioOutput.c.\r
+ */\r
+ \r
+#ifndef _AUDIO_OUTPUT_H_\r
+#define _AUDIO_OUTPUT_H_\r
+\r
+ /* Includes: */\r
+ #include <avr/io.h>\r
+ #include <avr/wdt.h>\r
+ #include <avr/power.h>\r
+ #include <avr/pgmspace.h>\r
+ #include <avr/interrupt.h>\r
+ #include <stdbool.h>\r
+\r
+ #include "Descriptors.h"\r
+ \r
+ #include <LUFA/Version.h>\r
+ #include <LUFA/Drivers/Board/LEDs.h>\r
+ #include <LUFA/Drivers/Peripheral/ADC.h>\r
+ #include <LUFA/Drivers/USB/USB.h>\r
+ #include <LUFA/Drivers/USB/Class/MIDI.h>\r
+\r
+ /* Macros: */\r
+ /** LED mask for the library LED driver, to indicate that the USB interface is not ready. */\r
+ #define LEDMASK_USB_NOTREADY LEDS_LED1\r
+\r
+ /** LED mask for the library LED driver, to indicate that the USB interface is enumerating. */\r
+ #define LEDMASK_USB_ENUMERATING (LEDS_LED2 | LEDS_LED3)\r
+\r
+ /** LED mask for the library LED driver, to indicate that the USB interface is ready. */\r
+ #define LEDMASK_USB_READY (LEDS_LED2 | LEDS_LED4)\r
+\r
+ /** LED mask for the library LED driver, to indicate that an error has occurred in the USB interface. */\r
+ #define LEDMASK_USB_ERROR (LEDS_LED1 | LEDS_LED3)\r
+ \r
+ /** Scale factor used to convert the floating point frequencies and ratios into a fixed point number */\r
+ #define SCALE_FACTOR 65536\r
+ \r
+ /** Base (lowest) allowable MIDI note frequency */\r
+ #define BASE_FREQUENCY 27.5\r
+ \r
+ /** Ratio between each note in an octave */\r
+ #define NOTE_OCTIVE_RATIO 1.05946\r
+ \r
+ /** Lowest valid MIDI pitch index */\r
+ #define BASE_PITCH_INDEX 21\r
+ \r
+ /** Maximum number of MIDI notes that can be played simultaneously */\r
+ #define MAX_SIMULTANEOUS_NOTES 3\r
+ \r
+ /** Number of samples in the virtual sample table (can be expanded to lower maximum frequency, but allow for\r
+ * more simultaneous notes due to the reduced amount of processing time needed when the samples are spaced out)\r
+ */\r
+ #define VIRTUAL_SAMPLE_TABLE_SIZE 512\r
+ \r
+ /** Sample table increments per period for the base MIDI note frequency */\r
+ #define BASE_INCREMENT (((F_CPU / VIRTUAL_SAMPLE_TABLE_SIZE / 2) / BASE_FREQUENCY))\r
+\r
+ /* Type Defines: */\r
+ typedef struct\r
+ {\r
+ uint8_t LRUAge;\r
+ uint8_t Pitch;\r
+ uint32_t TableIncrement;\r
+ uint32_t TablePosition;\r
+ } DDSNoteData; \r
+\r
+ /* Function Prototypes: */\r
+ void SetupHardware(void);\r
+ \r
+ void EVENT_USB_Device_Connect(void);\r
+ void EVENT_USB_Device_Disconnect(void);\r
+ void EVENT_USB_Device_ConfigurationChanged(void);\r
+ void EVENT_USB_Device_UnhandledControlRequest(void);\r
+ \r
+#endif\r
projects / pub / lufa.git / blobdiff